Userify - Userify is a cloud-based SSH key management solution.
OneLogin - On-demand SSO, directory integration, user provisioning and more
Ganymed SSH-2 - Ganymed SSH-2 for Java is a library which implements the SSH-2 protocol in pure Java.
TeamPassword - TeamPassword helps you manage and share access to the apps, services, and tools your team needs to keep projects moving.
FireSSH - After 13 years and 25 million downloads later, Firefox has officially removed FireFTP and FireSSH support from the browser. Thus, I've ended support / development of the addons. I recommend switching to Waterfox to continue using the addons.
AuthAnvil - AuthAnvil software is an integrated identity and access management tool designed to help IT managers service their networks, infrastructure network, and ensure that devices are safe and secure at all times. Read more about AuthAnvil.